Home / 130,972.18-180,756.59-72,834.72

Finding the Fourth Proportional to 130,972.18, 180,756.59 and 72,834.72

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Solution

The fourth proportional to 130,972.18, 180,756.59 and 72,834.72 is: 100,520.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,972.18 : 180,756.59 = 72,834.72 : x
  2. Step 2: Convert to fraction form
    130,972.18/180,756.59 = 72,834.72/x
  3. Step 3: Cross multiply
    130,972.18x = 180,756.59 × 72,834.72
  4. Step 4: Simplify right side
    130,972.18x = 13,165,355,752.93
  5. Step 5: Solve for x
    x = 13,165,355,752.93/130,972.18
  6. Step 6: Final answer
    x = 100,520.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.